Laguna S 2.1 vs Nemotron 3 Ultra (550B A55B)

Laguna S 2.1 leads the LLM Stats Score 40.9 to 36.3. Laguna S 2.1 is 7.4x cheaper per token.

Poolside · NVIDIA · Updated for 2026

Which is better?

Laguna S 2.1 leads the overall LLM Stats Score 40.9 to 36.3, ranking #52 overall.

In the 2 individual benchmarks reported for both models, Laguna S 2.1 wins 2; this is a narrower head-to-head signal than the composite indexes.

On price, Laguna S 2.1 is roughly 7.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Laguna S 2.1 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Laguna S 2.1

overall performance matters — it scores 40.9 and ranks #52 on LLM Stats
your work emphasizes reasoning and coding — it leads those capability indexes
you value its reported benchmark strengths — it wins 2 of 2 exact shared results
cost matters — it's about 7.4x cheaper per token
you process long inputs — it offers a 1,048,576 token context window
you want the most recent training data — it shipped Jul 2026

Choose Nemotron 3 Ultra (550B A55B)

you want predictable pricing at $0.50/M input and $2.20/M output

At a glance

The differences that matter most.

Better token value: Laguna S 2.1

Laguna S 2.1

Poolside

Nemotron 3 Ultra (550B A55B)

NVIDIA

Core performance indexes

LLM Stats Score

40.9

#52 · 6 evals

Best

36.3

#77 · 25 evals

Reasoning

40.5

#51 · 4 evals

Best

35.5

#80 · 22 evals

Coding

31.3

#44 · 5 evals

Best

21.1

#89 · 5 evals

Agents

24.7

#48 · 5 evals

Best

12.6

#99 · 8 evals

Cost, coverage & limits

Benchmark wins

2 of 2

Best

0 of 2

Input price

$0.10 / M

Best

$0.50 / M

Output price

$0.20 / M

Best

$2.20 / M

Context window

1,048,576

Best

262,144

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared

Index

Laguna S 2.1

Nemotron 3 Ultra (550B A55B)

Tool use

17.6#71 · 2 evals

3.0#163 · 2 evals

Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

6 reported for Laguna S 2.1 · 26 for Nemotron 3 Ultra (550B A55B)

2 shared

Laguna S 2.1 outperforms in 2 benchmarks (SWE-bench Multilingual, Terminal-Bench 2.1), while Nemotron 3 Ultra (550B A55B) is better at 0 benchmarks.

Laguna S 2.1 significantly outperforms across most benchmarks.

Thu Sep 10 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Laguna S 2.1 costs less

For input processing, Laguna S 2.1 ($0.10/1M tokens) is 5.0x cheaper than Nemotron 3 Ultra (550B A55B) ($0.50/1M tokens).

For output processing, Laguna S 2.1 ($0.20/1M tokens) is 11.0x cheaper than Nemotron 3 Ultra (550B A55B) ($2.20/1M tokens).

In conclusion, Nemotron 3 Ultra (550B A55B) is more expensive than Laguna S 2.1.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Thu Sep 10 2026 • llm-stats.com

Laguna S 2.1

Input tokens$0.10

Output tokens$0.20

Best providerPoolside

Nemotron 3 Ultra (550B A55B)

Input tokens$0.50

Output tokens$2.20

Best providerDeepinfra

Notice missing or incorrect data?Start an Issue→

Model Size

Parameter count comparison

432.0B diff

Nemotron 3 Ultra (550B A55B) has 432.0B more parameters than Laguna S 2.1, making it 366.1% larger.

Laguna S 2.1

118.0Bparameters

Nemotron 3 Ultra (550B A55B)

550.0Bparameters

118.0B

Laguna S 2.1

550.0B

Nemotron 3 Ultra (550B A55B)

Context Window

Maximum input and output token capacity

Laguna S 2.1 accepts 1,048,576 input tokens compared to Nemotron 3 Ultra (550B A55B)'s 262,144 tokens. Only Nemotron 3 Ultra (550B A55B) specifies output context (262,144 tokens).

Laguna S 2.1

Input1,048,576 tokens

Output- tokens

Nemotron 3 Ultra (550B A55B)

Input262,144 tokens

Output262,144 tokens

Thu Sep 10 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under OpenMDW License v1.1.

Both models share the same licensing terms, providing consistent usage rights.

Laguna S 2.1

OpenMDW License v1.1

Open weights

Nemotron 3 Ultra (550B A55B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Laguna S 2.1 was released on 2026-07-21, while Nemotron 3 Ultra (550B A55B) was released on 2026-06-04.

Laguna S 2.1 is 2 months newer than Nemotron 3 Ultra (550B A55B).

Laguna S 2.1

Jul 21, 2026

1 months ago

1mo newer

Nemotron 3 Ultra (550B A55B)

Jun 4, 2026

3 months ago

Knowledge Cutoff

When training data ends

Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while Laguna S 2.1's cutoff date is not specified.

We can confirm Nemotron 3 Ultra (550B A55B)'s training data extends to 2025-09-30, but cannot make a direct comparison without Laguna S 2.1's cutoff date.

Laguna S 2.1

—

Nemotron 3 Ultra (550B A55B)

Sep 2025

Provider Availability

Laguna S 2.1 is available from Poolside. Nemotron 3 Ultra (550B A55B) is available from DeepInfra.

Laguna S 2.1

Poolside

Input Price:Input: $0.10/1MOutput Price:Output: $0.20/1M

Nemotron 3 Ultra (550B A55B)

Deepinfra

Input Price:Input: $0.50/1MOutput Price:Output: $2.20/1M

* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Laguna S 2.1 and Nemotron 3 Ultra (550B A55B) side-by-side, then vote on the output you prefer.

Laguna S 2.1

✓ Preferred

Nemotron 3 Ultra (550B A55B)

Open in Playground

FAQ

Common questions about Laguna S 2.1 vs Nemotron 3 Ultra (550B A55B).

Which is better, Laguna S 2.1 or Nemotron 3 Ultra (550B A55B)?

Laguna S 2.1 leads the LLM Stats Score 40.9 to 36.3. Laguna S 2.1 is made by Poolside and Nemotron 3 Ultra (550B A55B) is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Laguna S 2.1 compare to Nemotron 3 Ultra (550B A55B) in benchmarks?

Laguna S 2.1 scores SWE-bench Multilingual: 78.5%, Terminal-Bench 2.1: 70.2%, SWE-Bench Pro: 59.4%, Toolathlon: 49.7%, SWE Atlas - Codebase QnA: 46.2%. Nemotron 3 Ultra (550B A55B) scores RULER: 94.7%, IMO-AnswerBench: 92.3%, PinchBench: 90.0%, LiveCodeBench v6: 89.0%, GPQA: 87.0%.

Is Laguna S 2.1 cheaper than Nemotron 3 Ultra (550B A55B)?

Laguna S 2.1 is 5.0x cheaper for input tokens. Laguna S 2.1 costs $0.10/M input and $0.20/M output via poolside. Nemotron 3 Ultra (550B A55B) costs $0.50/M input and $2.20/M output via deepinfra.

What are the context window sizes for Laguna S 2.1 and Nemotron 3 Ultra (550B A55B)?

Laguna S 2.1 supports 1.0M tokens and Nemotron 3 Ultra (550B A55B) supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Laguna S 2.1 and Nemotron 3 Ultra (550B A55B)?

Key differences include LLM Stats Score (40.9 vs 36.3), context window (1.0M vs 262K), input pricing ($0.10 vs $0.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Laguna S 2.1 and Nemotron 3 Ultra (550B A55B)?

Laguna S 2.1 is developed by Poolside and Nemotron 3 Ultra (550B A55B) is developed by NVIDIA.

Laguna S 2.1 vs Nemotron 3 Ultra (550B A55B)